Improvement in the manufacture of paper-board



2 Sheets-Sheet 1. J. F. SHRED-ER. Manufacture of Paper-Board.

No. 210,714. Patented Dec. 10, 1878..

WITNESSES: [N YEA/TOR ATTORNEYZZ' 2 Sheets-Sheet '2 J. P. SHEEDBR.Manufacture of Paper-Board.

No. 210,714. Patented Dec. 10, 1878.

' MPETERS, PHO'KLUTHOGRAFMER, WASHINGTON. Dr C.

UNITED STATES i PATENT @FFICE.

J. FREDERICK SHEEDER, OF KIMBERTON, PENNSYLVANIA.

IMPROVEMENT IN THE MANUFACTURE OF PAPER-BOARD.

Specification forming part of Letters Patent No. 210,714, dated December10, 1878; application filed October 14, 1878.

To all whom it may concern:

Beit known that I, J. FREDERICK SHEEDER, of Kimberton, in the county ofChester and State of Pennsylvania, have invented certain new and usefulImprovements in PaperBoard Driers; and I do hereby declare the followingto be afull, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification, in which- Figure 1 is a side elevation, Fig. 2 is afront elevation, and Fig. 3 is a perspective.

My invention has for its object to provide a machine or apparatus fordrying MndeES boards, junk-boards, straw-boards," leatherboards,boxboards, Ww boards, or any other kind of heavy paper or paste board.

My invention consists in the peculiar construction and combination ofparts hereinafter described, having reference particularly, first, tothe provision of tiers of continuous pipes, each tier of the seriesbeing hinged so as to turn up or fold independently of the others, andcommunicating by flexible connections or rocking joints with manifoldsfor admitting and permitting the exit of steam; second, to thecombination, with the series of continuous steam-pipes, of plates, whichform tables for the reception of the boards to be dried, and serve todistribute the heat from said pipes evenly and uniformly over saidboards; third, to the arrangement of the heating-pipes and the plateswhich rest thereon in a slightly-inclined position, so as to cause thewater of condensation to flow off from the steam-pipes and a current ofair or draft to be induced between the tiers of driers; fourth, tocertain details of construction and combination hereinafter set forth.

Referring to the accompanying drawing, A indicates a floor or stand, onwhich the apparatus is stationed. B B are side frames, composed ofbase-plates b I), uprights b b and inclined stays 1) b 0 O are bars,pivoted in the stays b b at c 0, whereby they may be elevated or foldedinto an upright position and caused to rest upon one another, as hereinafter fully set forth. Each of the bars 0 is composed of twohorizontal pieces, 0 0 the 0 so as to project forwardly and form handles0 for a purpose hereinafter described.

D D are series of continuous pipes, and E E metallic plates which restthereon, said pipes and plates being secured, as shown, to the foldingbars 0 0, between the pieces c 0 Each pipe of the series D D isconnected at its opposite extremities d d with manifolds F F for theadmission of the steam and the exit thereof, respectively. G G are theconncctions between the steam-pipes D D and the manifolds F F, saidconnections being flexible pipe or gum tubing, (for which suitablerocking joints may be substituted,) so as to permit the elevation andlowering of said pipes D, as hereinafter set forth, without interferingwith the circulation of the steam through them. Theends d of the pipes Dare brought as close as possible to the pivots 0, so as to be within ashort radius of the latter transverse pipes, d which form continuationsof the pipes D, being employed to bring the opposite ends also as nearas may be to said centers 6.

The bars 0 of the lowest tier have feet 0 0", of such height that whenresting upon the floor, or upon studs 0 the said bars will in clineslightly from a horizontal line downwardly and backwardly to the pivotsc. The other bars 0, resting thereon and on each other, as shown, have alike'inclination. This inclination will cause the water of condensationin the pipes D to flow out of the same and away through the manifold F,and will induce currents of air to pass from the back part of the drierto the front between the tiers of pipes v and plates.

The operation is as follows: All of the pipes and plates or tables,except the lowest one, are turned up, standing vertical, or nearly so,the lowest one being turned down, so as to be supported forwardly by thefeet 0 The boards to be dried (shown at H H in Fig. 3) are laid upon thelower plate E in suflicient number or quantity to cover the same. Theother tiers or tables are then in succession turned down and receive theboards to be dried, said boards being laid one deep on the plates E, thebars C keeping the tiers the proper distance apart, to prevent the pipesfrom touching the boards. The steam, which is constantly circulatingthrough the pipes D, heats the same, and also the plates E, said platesserving to distribute such heat uniformly both above and below theboards over their entire surface, thereby causing them to dry evenlythroughout their entire extent, and preventing warping.

The heat from the pipes and plates expels the moisture from the boardsresting thereon, and, owing to the inclination of the tiers, inducescurrents of air to pass from the back to the front of the drier,carrying off such moisture, while said inclination also causes the waterof condensation to flow from the front to the rear of the drier and awaythrough the manifold F.

If desired, plates similar to the plates E may be fastened below as wellas above the pipes D, and either live or exhaust steam may be used asthe heat medium.

I have used steam at thirty pounds pressure and obtained very beneficialand satisfactory results in drying; but the temperature need not beconfined to the limit which such pressure imports, but may be variedwithin the skill and judgment of the operator. Either live or exhauststeam may be employed, and where a paperboard factory uses a steamboiler and engine the exhaust from the latter will suffice for thedrying apparatus herein described.

In removing the boards after drying, they are taken first from the toptier or table, and then successively from those below, each tier ortable being turned up when its boards are removed, so as to permit easyaccess to the one next below. The projecting ends 0 answer as handles inelevating and lowering or folding the tiers.

What I claim as my invention is- 1. The pipes D, hinged or pivoted at ornear their back edges in suitable supports to permit their being raisedand lowered or folded, substantially as'and for the purpose set forth.

2. In combination with heating pipes D, metallic plates E, appliedthereto, forming rests for the boards to be dried, and causing the heatfrom said pipes to be distributed uniformly over said boards, as setforth.

3. The combination, with hinged or folding heating-pipes, ofheat-distributing plates, secured to and moving therewith, substantiallyas set forth.

4. The arrangement of the tiers composed of pipes D and plates E in aslightly-inclined position, so as to induce currents of air between saidtiers and. to cause the flow ofi of have,hereunto set my hand this 26thday of 1 September, 1878.

J. FREDERICK SHEEDER. Witnesses:

J os. B. CONNOLLY, M. DANL. OoNNoLLY.

